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Draw the reaction mechanism for the formation of ethanol from bromoethane and water and name the mechanism.

The first step is the draw out the molecules in question to understand what is happening in the reaction. You can see that the bromine atom has been substituted for an alcohol group (OH) in the enthane molec...
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Answered by Henry H. • Chemistry tutor
8582 Views

when do you use the imperfect and preterite tenses

The imperfect tense is used for actions that were repeated in the past or to describe a state in the past. eg. when I was younger I used to dance - cuando era pequena bailaba. the preterite tense is used whe...
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Answered by Charley L. • Spanish tutor
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In French, does the adjective come before or after the noun which it describes?

Unlike in English, the adjective generally comes after the noun it describes in French for example to say "the red car", you would say "la voiture rouge". However, there are some common a...
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Answered by Hettie B. • French tutor
2795 Views

What is the best way to revise in preparation for GCSE maths.

The best way to revise Maths is by completing questions by topic then once confident, moving on to past papers.
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Answered by Alex C. • Maths tutor
3241 Views

How does a hypothesis test work?

A hypothesis test can be thought of as being somewhat similar to a court case. In a court case, we want to find out whether someone is either guilty, or not guilty, so we assume that they are not guilty, and...
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Answered by Denis A. • Maths tutor
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